Online Grammar Checker

To use grammar and punctuation checker, paste text into the text box. Click on Check Grammar button to correct English mistakes free.

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Grammar and Punctuation Checker

Use Prepostseo Grammar Checker to make your writing flawless. This sentence corrector scans the text to find all grammar and punctuation errors for free.It can also work as a free punctuation checker, sentence corrector, as well as a spelling checker.

This tool is designed on a diverse set of Artificial Intelligence (AI) by native English professionals so that it can check the given text for all kinds of grammatical mistakes like a Pro. So, now you can jump directly to publishing your content online after writing because this free grammar checker allows you to find and remove any grammar mistakes with one click.

The below image shows what writers and authors think about grammatical mistakes.

How Prepostseo grammar checker works?

This online grammar checker works on advanced AI algorithms that are trained on basic grammar rules. These algorithms efficiently scan the given text to find all kinds of mistakes in it. It then underlines the detected grammatical mistakes. 

It completes the checking process in only a few seconds and shows you all grammar, punctuation, and spelling errors by highlighting them in different colors. You can scroll to the error to get suggestions and replacements for the mistake.

It classifies spelling errors and grammar errors in two different colors:

  1. It highlights spelling errors in the red line.
  2. Grammar, syntax, and punctuation mistakes are highlighted in yellow.


How to Use this AI Grammar Checker?

Using this grammar and punctuation checker is quite simple. It does not require any technical knowledge. All you have to do is follow the steps below:

  1. Upload your file or copy/paste text into the input area.
  2. Hit the Check Grammar button to start the process.
  3. It will highlight all types of grammatical errors.
  4. Click the “Fix All” button to fix all detected errors at once, OR click on each mistake to get appropriate suggestions. 

Why Use Our Online Grammar Checker?

There are plenty of reasons that make our tool the best among all other online grammar checkers.

Here are some Key Reasons why you should use our Grammar Checker:

✅ Checks   Grammar, spelling, & punctuation
🤖 AI-Powered  Suggestion to fix mistakes
⌛️ Save time  Fixes all errors in one click
📖 Languages  EN, ES, FR, IT, and more
💲 Pricing  100% Free to use

Key Features of Our Grammar Checker

The Prepostseo free grammar checker is developed to resolve grammatical mistakes in written content within a matter of seconds. This grammar check tool is highly quick and accurate in identifying all kinds of mistakes in written content and then suggests the correct use of grammar in the sentence or phrase.

Here are some noticeable features of our online grammar corrector.

  1. User-Friendly Interface: 

Our tool has a user-friendly interface. This means it will not take much of the user’s valuable time and effort to understand how to make use of it. Instead, all they have to do is land on the homepage and start using the tool.  

  1. In-depth Grammar and Punctuation Check:

The advanced Artificial Intelligence technology allows the tool to run an in-depth scan on the input text in order to find all the grammar and punctuation mistakes. This ensures that the punctuation corrector will never miss or neglect any mistake. 

  1. AI-based Suggestions

Our Grammatica check not only finds grammar, spelling, and punctuation mistakes in the input content but also provides appropriate suggestions. The suggestions are AI-based, meaning they will be 100% accurate according to the English grammar rules.  

  1. One-click correction:

This feature is something that you will not find in any other popular grammar check tool. Our grammar checker gives the option to automatically correct all the detected mistakes at one click. This can be highly useful because it is a headache to rectify errors manually. 

  1. Free of cost:

This online English corrector is completely free of cost for everyone. This means no signup or premium account is required to use it, and it will never ask you to pay a penny.

  1. No limitations

There are no limitations or restrictions on words to check grammar for your essay or blog. You can check 1000 words, 2000 words, or even 5000 words using this English grammar check tool.

  1. Support multiple file formats:

It is the best punctuation checker that lets you check the grammar of your text by uploading files in several file formats. You can upload DOC, DOCX, TXT, and PDF files. Besides this, you can also directly type or paste the text in the given box to start the checking process.

  1. Highlight Grammatical Mistakes

For user ease, the tool highlights the detected mistakes with different colors. As mentioned earlier:

  • It highlights spelling mistakes in red.
  • And highlight grammar, syntax, and punctuation mistakes in yellow.
  1. Checks grammar in multiple languages:

This AI grammar checker has the ability to check the grammar issues of input text in 10+ languages.

The languages are  Italian, Portuguese, Espanol, Nederland, Svenska, Francais, Japanese, Russian, Deutsche, Polski, Danish, and English. This means users from different parts of the world can make use of this tool to check the grammar of text written in their native language. 

  1. Auto language detection

Yes. It detects the language of the text automatically. You may choose any language from the given list if you want, but there is no need. Because this tool automatically detects the language of the essay you pasted in the box.

Who can use this grammar checker?

This grammar checker can be used by anyone who deals with writing content. Some of the most prior users are:

  • Students

In the world of academia, proper grammar is one aspect that can help students achieve good grades while presenting perfect and flawless grammar assignments.
Teachers usually put great effort into students ' linguistic skills. However, the fact is most students still are not aware of the basic rules of grammar and end up making different kinds of errors in their written material.
The following graph shows the percentage of total grammatical and other errors categorized by various levels.
If you are also a student who lacks grammar, then this AI grammar-checking tool can be a good option for you. It will not only help in making the writing error-free but can also contribute to improving your knowledge about grammar. 

  • Teachers

We all know that teachers have to check for plagiarism in all the papers of students. But along with plagiarism, they also need to check students' papers or assignments for any kinds of grammatical mistakes. And manually checking students writing for errors is quite a labor-intensive task, but fortunately, this issue has now been resolved. 

Now, teachers can use this grammatica check tool to highlight spelling, grammar, and punctuation mistakes in students' assignments or writing.

This grammar and punctuation checker also shows a score out of 100, making it easy for the teachers to give away grades to their students.

  • Blogger & SEO writers

Bloggers and SEO writers have to come up with new content every day. This puts the reputation of a blogger at risk every time. 

If their published content contains basic grammar mistakes, they may lose valuable readers and overall reputation. Apart from this, error-free content is also useful for SEO. 

So, bloggers and SEO writers can make use of this AI grammar checker to make their blog content error-free. It will automatically scan the entire blog post to find mistakes in it.

  • Freelance Writers

There is no doubt that freelance writing is a tough job. This is so because they have to make sure their work is perfect as per the demand of their respective customers while keeping up with the tight deadlines. 

Obviously, to follow up the tight deadlines, they will try to write as fast as they can. But this will increase the chance that they may commit silly grammar mistakes, which gives a negative sign to the client and leads to the rejection of work. 

So, to avoid grammatical errors when writing fast, freelance writers can make use of our online grammar checker. It will allow them to find and fix mistakes with just one click.

  • Companies & Enterprises

We all know that enterprises have to make sure that the documentation of any product or service is error-free. Usually, clients and suppliers trust an enterprise that communicates correctly and clearly.

In this digital world, many businesses rely on written documents like emails, memos, and written agreements for their success. Documents that are free of spelling and grammatical errors will help your employees to understand your instructions properly.

Besides this, it will also leave a good impression on the customer that the product or service they are going with is coming from professionals. But the reality is completely opposite of what we have said. 
It is being seen that many customers who want to buy products will hesitate to purchase from a brand/business whose contents consist of grammar and spelling errors.

So, companies can use this free grammar checker to make their impression good in the eyes of potential customers, which will further result in increased conversions.

Importance of Our AI Grammar Checker

We are living in an era where writing has become a basic form of communication. From students to teachers, journalists to bloggers, and social media users to employees, writing is important. 

Obviously, while writing, you may mistakenly use spelling, grammar, or punctuation that will not only make others confused about what you are trying to say but also raise questions about your writing abilities. 

The fact is that nearly anyone is vulnerable to dumb grammar mistakes, even native speakers. By using our punctuation and grammar checker, you can quickly and efficiently eliminate all kinds of errors from your writing and stand out with full confidence. 

Apart from this, there are multiple other reasons you should use this AI grammar checker:

  1. It makes you more credible:

No one out there reading this wants people to take his/her writing as amateur…right?  With the help of this English corrector, you can make your writing more credible and professional as a

  • Student
  • Publisher
  • Employee
  • Businessman
  • Content Writer
  1. Gets the attention of the reader:

The primary aim of each author is to address the reader in such a manner that the user understands the context.

If the grammar of your essay is not up to the mark, the reader will lose interest. That is why it is essential to make use of a grammar checker to quickly make the writing error-free without spending much time and effort. 

BTW, PrepostSeo also offers an AI Essay writer that you can use to generate quality essays in no time.  

  1. Improves your writing skills:

When you use this grammar check tool to proofread your writing, you will get familiar with the common errors you are making. You will definitely find ways to avoid those common mistakes, resulting in improved writing abilities. 

Besides this, this tool will also help in improving your knowledge about grammar, spelling, and punctuation rules - which is crucial for better writing. 

  1. Saves valuable time:

If you write longer content, it can be time-consuming and tiring to proofread every piece of work you produce. The better use of the time is probably not to obsess about one article or essay for days.

By using our grammar checker, you can easily proofread both long and short-form content to find and fix all kinds of grammatical errors within seconds.  

  1. Indicates your authority:

Basic grammar and spelling mistakes make you look stupid. With faultless content, you may prove your authority. This will give people a feeling that you have the knowledge and familiarity with what you are doing. 

And guess what…a grammar checker can help you achieve maximum authority by eliminating all mistakes from the writing.

Prepostseo grammar checker removes

1. Active & Passive voice errors

Many people think that any particular sentence that consists of verbs like is, was, were, etc. is a passive voice but this is not actually true. A sentence that will be converted to a passive voice should have an object.

Active voice: “The history class witnessed the fort.”

The Passive voice transformation,

Incorrect: “The history class has witnessed the fort.”

Correct: “The fort was witnessed by the history class.”

Always keep in mind that all passive voice sentences have a form of a verb like was, were, etc., but not all sentences that consist of those verbs are passive. We should have to be very careful while writing passive voice sentences in our articles.

2. Spelling Mistakes

This tool efficiently identifies and removes spelling mistakes. Spelling mistakes in an essay or article create a very bad impact on the mind of readers. The content should be clean from all types of spelling mistakes.

Incorrect: “Jonas can dive in the see.”

Correct: “Jonas can dive in the sea.”

Spelling mistakes can easily be avoided if articles and content should be revised properly. Usually, most of the spelling mistakes will occur if the article is not revised properly.

3. Redundant Expression

The redundant expression is nothing but using the same keywords or words repeatedly whose meanings are the same. The redundant expression should be avoided as much as possible. They will affect the efficiency of the paragraph.

Incorrect: “We can completely book the hotel floor fully.”

Correct:We can completely book the hotel floor.”

The above incorrect expression will create a sense of redundancy. The meaning of the words “completely” and “fully” is the same but both words occurred in the sentence for the same context. Our tool removes this type of errors very precisely.

4. Verbs and Tenses mistakes

The mistakes of tenses are very common in English writing. Proper knowledge about tenses can reduce these mistakes. The proper form of verbs should be used depending on the scenario. Our tool takes care of this too.

Incorrect:We have a great party yesterday.”

Correct:We had a great party yesterday.”

5. Comma splices or fragmentation

Online sentence correction is very important for sentences to be fragmented in a proper way. The writer should clearly identify where the sentence fragmentation is needed and where to use it.

So, a comma should be inserted where necessary. Our comma checker also takes care of this type of mistake.

Incorrect: “If you are not out there. Get me a coffee.”

Correct: “If you are out there, get me a coffee.”

6. Ambiguous Pronoun References

Ambiguous usage of references of the pronoun can also affect the beauty of sentences. The writer should properly use pronoun references in sentences.

Incorrect: "Janice had a meeting with Tom, but he couldn’t meet her.”

Correct:Janice had a meeting with Tom, but Tom couldn’t meet Janice.”

It makes a sense of ambiguity in the mind of the reader who couldn’t meet.

Frequently Asked Questions

How to check if a sentence is grammatically correct?

To check if a sentence is grammatically correct,

  1. Go to Prepostseo grammar checker
  2. Paste the sentence in the input box
  3. Click the Check Grammar button

Within a few seconds, it will highlight all typos if your sentence has, along with their correct suggestions.

What is the best grammar checker?

Prepostseo grammar checker is the best free grammar checker due to the following factors:

  • Free online availability
  • No signup or registration is required
  • No daily usage limit
  • No word count limit
  • Equipped with AI technology

What can you do if the spelling and grammar checker finds an error that is not really an error?

If the grammar checker is providing you with an error that you think is not, then you can simply ignore it.